Rule No. 2: It's OK to Pay the Taxes

In this special preview of Jim Cramer's newest book, he says to fear not the tax man but the loss man.

Editor's note: Jim Cramer's new book, Real Money: Sane Investing in an Insane World , is available in selected bookstores now. As a special bonus to RealMoney readers, we will be running Cramer's "Twenty-Five Rules of Investing." For more about the new book and to order it, click here . Today, we present Cramer's second rule of investing. To read about his first rule, click here .

No one has ever liked to pay taxes. As long as there have been taxes, people have hated paying them. But the aversion to paying taxes on stock gains borders on the pathological. That's why my second bedrock tenet for my 25 rules of investing is:

It's OK to pay the taxes.

When I went bearish in March 2000, I received a huge amount of angry email from people who felt aggrieved. They had bought, I don't know, Redback Networks ( RBAK) or InfoSpace ( INSP) because of me, because of something I wrote, and now they were being told to sell it.

Had I no regard for them? Had I no regard for how much in taxes they would have to pay because the gains were short-term? What was the point of making money in a compressed period of time when it meant you would have much less to show for it than if the stock were held long-term?

I had zero sympathy for these people. I had long ago made my peace with the tax man. I knew that some gains were and are simply unsustainable. Given, though, that so many people thought that if you bought and held, you always ended up with more than if you bought and sold, my discussion fell on deaf ears, an audience like the character in The Lord of the Rings, Gollum, who says, "I'm not listening, I'm not listening."

Anyone who held on to get the long-term gain then ended up with no gain at all. You obviated the need to pay taxes the hard way; no taxes are due when you sell at a loss.

It's important to remember that gains, any gains, can be ephemeral. It is better to stop worrying about the tax man and take the gains when those gains appear unsustainable than to ride things back to a loss. Stop fearing the tax man; start fearing the loss man. You won't regret it.

Please note that due to factors including low market capitalization and/or insufficient public float, we consider Redback Networks to be a small-cap stock. You should be aware that such stocks are subject to more risk than stocks of larger companies, including greater volatility, lower liquidity and less publicly available information, and that postings such as this one can have an effect on their stock prices.

James J. Cramer is a director and co-founder of TheStreet.com. He contributes daily market commentary for TheStreet.com's sites and serves as an adviser to the company's CEO. Outside contributing columnists for TheStreet.com and RealMoney.com, including Cramer, may, from time to time, write about stocks in which they have a position. In such cases, appropriate disclosure is made. To see his personal portfolio and find out what trades Cramer will make before he makes them, sign up for Action Alerts PLUS by clicking here. While he cannot provide personalized investment advice or recommendations, he invites you to send comments on his column to jjcletters@thestreet.com. Listen to Cramer's RealMoney Radio show on your computer; just click here. Watch Cramer on "Mad Money" at 6 p.m. EST weeknights on CNBC. Click here to order Cramer's latest book, "Real Money: Sane Investing in an Insane World," click here to get his second book, "You Got Screwed!" and click here to order Cramer's autobiography, "Confessions of a Street Addict."

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